ACTION AND USES: Said to be sedative. Was formerly used as an addition to cough mixtures and as an antiemetic but, because of its poisonous properties and instability, is no longer used to the same extent. DOSAGE: 0.1 Cc. or 1-1/2 minims (U.S.P.)--not drops. =Acidum Hypophosphorosum (Acid. Hypophos.), Hypophosphorous Acid, U.S.P.=--H{3}PO{2} (about 31%). A colorless, odorless liquid. ACTION AND USES: Ingredient of compound hypophosphite preparations. _Acidum Hypophosphorosum Dilutum (Acid. Hypophos. Dil.), Diluted Hypophosphorous Acid, U.S.P._--H{3}PO{2} (about 10%). A colorless, odorless liquid with a strong acid taste. DOSAGE: 0.5 Cc. or 8 minims (U.S.P.), diluted. =Acidum Lacticum (Acid. Lact.), Lactic Acid, U.S.P.=--Equivalent to about 87 per cent. lactic acid. A colorless or nearly colorless, nearly odorless, syrupy liquid, with an acid taste. Miscible with water. ACTION AND USES: Caustic; seldom used internally. DOSAGE: 2 Cc. or 30 minims (U.S.P.), diluted. =*Acidum Nitricum (Acid. Nitric.), Nitric Acid, U.S.P.=--HNO{3} (about 68%). A colorless, fuming, very corrosive liquid with a suffocating odor. Miscible with water. ACTION AND USES: Caustic. =Acidum Nitrohydrochloricum (Acid. Nitrohydrochl.), Nitrohydrochloric Acid, U.S.P.= (Aqua Regia, Nitromuriatic Acid).--A mixture of hydrochloric acid, nitric acid, nitrosyl chloride and chlorine. A golden-yellow, fuming, very corrosive liquid. Miscible with water. ACTION AND USES: Caustic. Formerly thought to be a "hepatic stimulant," but acts much like other mineral acids. _Acidum Nitrohydrochloricum Dilutum (Acid. Nitrohydrochl. Dil.), Diluted Nitrohydrochloric Acid, U.S.P._ (Diluted Nitromuriatic Acid).--An aqueous solution of about one-fifth the strength of nitrohydrochloric acid; should be freshly prepared. DOSAGE: 1 Cc. or 15 minims (U.S.P.), well diluted. =Acidum Oleicum (Acid. Oleic.), Oleic Acid, U.S.P.=--Obtained from fats. A yellowish or brownish-yellow, oily liquid, having a lard-like odor and taste. Practically insoluble in water, partially soluble in 60 per cent. alcohol. ACTION AND USES: Solvent for making oleates. =*Acidum Phenylcinchoninicum (Acid. Phenylcinch.), Phenylcinchoninic Acid, U.S.P.= (Phenyl-Quinoline-Carboxylic Acid, Atophan). A white or nearly white, odorless or nearly odorless powder with a bitter taste. Insoluble in cold water, slightly soluble in cold alcohol. ACTION AND USES: Increases the excretion of uric acid and diminishes its concentration in the blood. Analgesic. Has been used in acute and chronic gout. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.), in tablets or powder. =Acidum Phosphoricum (Acid. Phos.), Phosphoric Acid, U.S.P.=--H{3}PO{4} (about 86.5%).